Shade-roller.



E. F. HARTSHORN.-

SHADE ROLLER.

APPLICATIPN FILED JUNE 4.1914.

Patented Oct. 24,1916.

FFTCE.

HORN COMPANY, OF EAST NEWARK, NEW

JERSEY.

JERSEY, A CORPORATION OF NEW SHADE-ROLLER.

Specification of Letters Patent.

Patented Oct. 24,1916.

Application filed June 4, 1914. Serial No. 842,821.

To all whom it may concern:

Be it known that I, EDMUND F. HARTS- HORN, a citizen of the United States, residing in the city of Newark, county of Essex, State of New Jersey, have invented a certain new and useful Shade-Roller, (13,) of which the following is a specification.

The invention relates to spring shade rollers particularly applicable for car. windows, and which are supported in brackets in such a manner that they may be lifted out.

The object of this invention is to lock the spring in a spring shade roller against unwinding when the spear is removed from the bracket. This and further objects will more fully appear from the following specification and accompanying drawings, considered together or separately.

Figure 1 is a front view of a window frame and hood, with parts broken away and illustrating a roller embodying my in-' vention, together with a shade thereon; Fig. 2 is an enlarged sectional view of one end of the roller, spear. and locking device; Fig. 3 is a sectional view on the line 3 of Fig. 2 looking in the direction of the arrow; Fig. 4: is a' plan view of the cap looking from the outside; Fig. 5 is a plan View of a pawl, ring and actuating finger; and Fig. 6 is an end view of the spear and plate for holding the pawl in position.

In all of the views, like parts are designated by the same reference characters.

Referring to Fig. 1, the window frame 1 carries a shade roller 2. The roller supports the usual shade 3, having devices at the bottom for holding it in expanded position. One end of the roller is supported upon a bracket 4 through the agency of the usual pin. The other end of the roller is supported upon a bracket 5 through theagency of a spear. This bracket 5 is provided with the usual notch so that the spear can be lifted out of it. The roller is usually hidden by a hood 6 so that it is rather difiicult to get at it and lift it in or out of the brackets. According to the present invention, I provide means for locking the spear against rotation and thereby preventing unwinding of the spring when the spear is lifted out of the brackets.

Referring to Fig. 2, the roller is shown as formed of a shell 7 closed at the end by means of a cap 8. This cap has a central opening forming the bearing for the spear 9. Thespear is attached'to a rod 10 and surrounding this rod is the usual spring 11.

The spear is provided with oppositely located notches 12, 12. In. connection with these notches is a pawl'13. As. shown in Fig. 5 I prefer to make this pawl with an inclined bearing surface so that when engaging with the spear it will permit rotation of the roller in one direction, and will lock it against rotation in theother direction. I prefer to support the pawl upon a ring 14:, which loosely surrounds the spear. The opening in the ring is sufficiently large, so that the ring may be moved off-centerfar enough soas to disengage the pawl from the notch in the spear. Associated with the ring is a finger 15. This finger extends through a notch 17 in the cap 8, so that the pawl, ring and finger must rotate with the roller. The finger extends a sufiicient distance beyond the margin of the roller to permit of an offset movement of the pawl sufliciently far to disengage it from? the notch. At this point the finger extends more or less parallel with the axis of the roller, as shown in Figs. 1

and 2. Outside of the pawl the spear is prothe ring 1% off-center'to disengage the pawl 13 from the notches 12. In this position the roller will be free to rotate in bothdirections. When the shade is. unwound so far from the roller that it no longer engages with the finger 15, then the finger will no longer be held in by the shade. When the roller is rotated to the point that the finger 15 is below the spear, as shown in Fig. 3, and the shade is unwound, then the weight of-the finger, ring and pawl will cause the pawl to drop into one of the notches 1'2, 12. The unwinding force of the spring willthe-n engage the side of the notch againstthe straight side of the pawl and will lock the parts together. The roller may then be r moved from the bracket without danger of the spring unwinding. When the roller is in place with the spear in the bracket, the pawl may be disengaged from the notch by pulling down the shade sufficiently to rotate the roller part way, thereby causing the inclined side of the pawl to ride up on the notch.

gagingthe pawl with the notch. Another way to release the spring is to trip the pawl by manual pressure applied to the finger 15. Two notches 12, 12 in the spear are preferred so that there will always be one at the top to allow the pawl to drop into when the notch 17 carries the finger 15 to the position below the pawl.

In accordance with the provisions of the patent statutes, I have described the principle of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire tochave it understood that the apparatus shown is merely illustrative and that the in vention can be carried out in other ways.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is:

-1. A shade roller having a spear and a spring, said spear having a notch therein, in combination with a pawl cooperating with said notch only when the pawl is above the notch, a member carried by the pawl and cooperating'with the shade whereby when the shade is wound upgn the roller the pawl will be released from the notch and be in inoperative position supported entirely by the engagement of theshade, there being an opening in the roller through which the member projects.

2. A shade roller having a spear and a spring, said spear having a notch therein, in combination with a ring surrounding the spear, a pawl carried by the ring, a finger projecting outward from the ring and having a part extending longitudinally of the roller, 'there'being an opening in the roller through which the finger projects whereby the roller and ring will rotate together and whereby relative radial movement oi the ring and spear to engage the pawl with the notch will be permitted only when the finger is below the spear, the projecting portionof the finger being engaged by the shade to disengage the pawl from the notch and to sup port the ring when the pawl is disengaged.

3. A shade roller having a spear and a spring, said spear having a notch, a pawl loosely carried on the spear and normally held out of the notch by theengagement of the shade, said pawl being actuated by gravcopies o1 patent may be obtained for being an opening in the roller through which the finger projects, whereby the pawl may be manually operated to release it from the notch only when the finger is below the spear, said pawl being supported in inoperative position by the engagement of the shade.

4c- A shade roller having a spear, said spear having a notch in its upper side, a ring encircling the spear, a pawl on the ring for engagement with the notch only when the pawl is above the notch, said ring being supported entirely by the spear when the pawl is in engagement with the notch, and means carried by the spear to retain the ring in position, said means acting as a closure for the end of the roller.

5. A shade roller having a spear, said spear having a notch in its upper side, a ring encircling the spear, a pawl on the ring for engagement with the notch only when the pawl is above the notch, said ring being supported entirely by the spear when the pawl is in engagement with the notch, and a disk carried by the spear to retain the ring in position, said means acting as a closure for the end of the roller.

6. A shade roller having an opening there in, a spear and a spring, said spear having a notch in the upper side thereof, a ring encircling the spear but disconnected therefrom, a finger on the ring projecting through the opening in the roller, a pawl on the ring, said pawl being normally held out of engagement with the notch by the engagement of the finger by the shade, said pawl being actuated by gravity to engage the notch only when the finger is above the notch and is released from engagement with the shade, said ring being supported entirely by the spear when the pawl is in engagement with the notch.

This specification signed and witnessed this second day of June, 1914.

EDMUND r. HARTSHORN.

Witnesses:

GEORGE E. GUNTHER, DAVID E. BUCK.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

